JP3104004B2 - Surface treatment method of aluminum or aluminum alloy material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating a surface of aluminum or an aluminum alloy material.

[0002]

2. Description of the Related Art Surface treatment of aluminum or aluminum alloy material to be vertically suspended includes surface treatment such as pre-treatment, anodic oxidation, electrolytic coloring, and washing with hot water, as well as painting according to coating specifications. Although these are various, these are programs in which the workpieces gripped by the carrier bar are sequentially transported by a transporter, for example, a truck crane, to a processing tank arranged according to each purpose, and the processing steps are advanced in a predetermined time. The method is common.

That is, FIG. 2A is a schematic side view of a vertical processing line in which processing tanks are linearly arranged, and a workpiece 2 gripped by a carrier bar 6 is a crane basket 5 of a bogie crane 3. , And the carrier bar 6 is moved up and down by the program method and the carriage crane 3 is moved, whereby the immersion of the workpiece 2 in the processing tank 1 is sequentially repeated.

Therefore, in this vertical line, as shown in FIG. 1 (b), the material to be processed 2 is usually hung at the frame hanging point 7, and is sequentially processed in the direction of the arrow, and finally the frame is removed. At 8, the frame is removed.

[0005]

In a conventional automatic transfer method in which a transfer procedure for each specification, for example, a destination of a transfer machine, a processing step, and a processing time are preliminarily programmed, materials to be processed are sequentially processed at a constant cycle time in each processing tank. However, the following problems have arisen because the pattern is based on the pattern that moves to (1) As the number of products increases, the number of processing facilities such as processing tanks increases more than necessary. (2) There are restrictions on processing conditions in the processing step, for example, immersion time. (3) When sequentially processing different specifications, since the material to be processed cannot be continuously processed, an empty bath for immersion is generated, and the production efficiency is reduced. (4) When a new specification is introduced into a line, the design of a program or the like is complicated, and it takes time to enter the line. (5) If a trouble occurs during the process, the conventional method can cope only with the movement programmed in advance, so that in an emergency, automatic conveyance cannot be performed, and manual operation is required. (6) The line speed is constant irrespective of the specification because jumping cannot be performed in the processing step and the unnecessary processing step is performed.

Accordingly, an object of the present invention is to provide a surface treatment of a material made of aluminum or an aluminum alloy, particularly in the case of a wide range of specifications, so that passing and back-feeding can be performed so that an optimum processing time can be set for each specification. To provide a surface treatment method capable of moving a line.

[0007]

In order to achieve the above object, the present inventor has set the optimum processing time for each specification so that the carrier bar holding the material to be processed may be overtaken, reversely fed, or run out of line. As a result of research focusing on the need for a transport device and system that facilitates movement, the carrier bar has information on the process order and processing time, for example, using a barcode or data carrier. Based on the information from the bar, a system has been constructed to send operation commands to the transporter that transports the carrier bar effectively. By arranging as many processing tanks as possible to meet the specifications, it was found that the above-mentioned problems could be solved and multi-specification surface treatment could be supported. Reached it was.

Accordingly, the present invention provides a processing tank in which a material to be processed suspended from a carrier bar is placed on a crane basket of a transfer machine in order to perform surface treatment on the material to be processed made of aluminum or an aluminum alloy in a vertically suspended state. In the surface treatment method carried out by immersing in the treatment tank, (a) each carrier has information including at least the lifting and lowering of the crane basket and its own position, and at least the order of the immersion step in the carrier bar; A control system for sending an operation command to the transporter to provide information including the processing time and (b) transporting the carrier bar based on the information from the carrier bar is provided. Determines the transport position of the transporter and raises and lowers the carrier bar according to commands. Given function, (d) providing a number of processing tanks line to accommodate the surface treatment of multi-specifications, (e)
An object of the present invention is to provide a surface treatment method for an aluminum or aluminum alloy material, which comprises providing a line dedicated to conveyance in parallel with a processing tank line in order to enable passing, reverse feeding, and interruption of a carrier bar.

[0009]

According to the present invention, information including the self-position is stored in each transporter, and information including the process order and processing time is stored in the carrier bar. Movement of the transporter, lifting and lowering of the transporter crane basket, control of the immersion time, pulling up and transporting of the material to be processed, etc. are performed efficiently. Processing time can be set.

Particularly, in order to cope with various specifications of surface treatment, the arrangement of the treatment tanks is changed in addition to the conventional vertical line, for example, as shown in FIG.
As shown in (a) to (c), they can be arranged in any type such as a U-shape, an H-shape or a merged-shape.

Further, it is not necessary to change the program for the new specification, and even if the transporter fails, it can be taken out or evacuated and processed, so that the degree of freedom such as overtaking of the processing step and reverse transport is large.

A monorail, a truck crane, or the like is used as a transporter that has a traveling direction switching function and can move freely.

[0013]

FIG. 1 is a conceptual diagram of a surface treatment system used in this embodiment, which will be described below with reference to FIG.

(1) Based on the information including the self-position report transmitted from each transport crane 4 moved by the monorail 9 to the controller 10, a transport position command (elevation of the carrier bar 6 on the destination and the transport crane basket 5) The transport crane 4 which has received (1) travels on the monorail to reach a predetermined processing tank, lowers the workpiece 2 suspended on the carrier bar 6, immerses it in the processing tank 1, and performs surface treatment.

(2) The processing time command from the carrier bar 6 is transmitted to the controller 10 via the processing time monitoring device 12 for the immersion time of the material 2 to be immersed in the processing tank 1 while being held by the carrier bar. Then, the transfer is requested after the completion of the immersion, and the transfer is performed by the transfer crane 4.

(3) The controller 10 is in communication with the transport monitor 11, and the transport is selected by the monitor.

(4) Among the transport cranes traveling on the monorail 9, the transport crane located at the rightmost side in the figure is a standby crane according to a command from the controller 10.

[0018]

As described above, according to the method of the present invention, instead of pre-programming the movement of the transporter, the transporter moves based on an instruction from a carrier bar or a system for issuing an operation command. If the surface treatment of the material to be processed covers a wide range of specifications, there is no limit to the processing steps and processing time, and it is easy to change or add processing steps, and to change the processing specifications. It is easy and it is easy to avoid system down.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a surface treatment process system used in one embodiment of the present invention.

FIG. 2 is a schematic side view (FIG. 2A) and a plan view (FIG. 2B) of a vertical line in which processing tanks are linearly arranged among surface treatment lines by a conventional program method.

FIGS. 3 (a) to 3 (c) show a processing tank having a U-shape and an H-shape, respectively, in order to cope with various surface treatments in the present invention.
It is a top view which shows the surface treatment line arrange | positioned in the shape of a letter, and a merging type.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing tank 2 Material to be processed 3 Bogie crane 4 Transport crane 5 Crane basket 6 Carrier bar 7 Frame hanging point 8 Frame removal point 9 Monorail 10 Controller 11 Transport monitor 12 Processing time monitoring device

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI B66C 13/48 B66C 13/48 A C25D 17/06 C25D 17/06 B 21/12 21/12 E // C23F 1/08 102 C23F 1/08 102 (56) References JP-B-51-4940 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) C25D 19/00 B05C 3/08 B05D 1/18 B05D 3/00 B05D 7/14 B66C 13/48 C25D 17/06 C25D 21/12 C23F 1/08

Claims (1)

(57) [Claims] In order to subject a material to be treated made of aluminum or an aluminum alloy to surface treatment in a vertically suspended state,
In a surface treatment method in which a material to be treated suspended on a carrier bar is carried on a crane basket of a carrier machine and conveyed onto a treatment tank, and immersed in the treatment tank, (a) at least a crane basket is provided on each carrier machine. In addition to having information including the vertical movement and the self-position, the carrier bar has at least information including the order of the dipping process and the processing time, and (b) transporting the carrier bar based on the information from the carrier bar. A control system that sends operation commands to the machine is provided. (C) The transfer position of the carrier is determined and the carrier bar is moved up and down by the command from the system. (D) Prepare a number of processing tank lines that can handle various specifications of surface treatment, (e) pass the carrier bar,
A surface treatment method for aluminum or an aluminum alloy material, characterized in that a line dedicated to conveyance is provided in parallel with a processing tank line so as to enable reverse feeding and interruption.